Coating composition

Disclosed is a primer coating composition for use between thermoplastic materials and metal. The primer composition comprises a polyester, at least half of the dibasic acid components of which are selected from terephthalic acid, isophthalic acid, 1,4-cyclohexanedicarboxylic acid or a mixture thereof. The polyester is either amorphous, or may contain some crystallinity to result in a melting point below about C. The heat of fusion of the polyester is less than about 10 calories per gram. The primer is especially useful in promoting adhesion between metal foil and cellulose acetate butyrate laminated thereto.

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Patent History
Patent number: T100204
Type: Grant
Filed: Apr 10, 1980
Date of Patent: Jan 6, 1981
Inventors: Doyle A. Weemes (Greeneville, TN), Robert W. Seymour (Kingsport, TN), George J. O'Neill (Kingsport, TN)
Application Number: 6/139,066